how to design slab in staad?
You need to model the slab using plate elements. To design the slab, in the modelling mode, go to Design > Concrete > specify the design parameters > click on Commands > select Design Slab/Element and assign it to the required plate elements. In the output, you can view the slab design results.
sir how to calculate the plate load?
what are the loads to be taken?
The document that describes the specifications and scope of your building project should tell you what loads to consider, or, what documents to use to obtain that information. Your own judgment should also be a guide in this matter. For example, for a water tank, the bottom slab should be designed for its own weight, plus, the weight of the water it supports, etc. The side walls of the tank should be designed for hydrostatic pressure due to that height of water. Commonsense tells us that the structure should be designed for wind, seismic, etc.
For buildings, the building code applicable for the project should tell you the amount of live load to consider on each floor and roof. These loads are usually specified in terms of pressure, such as for example, 400 kg/sq.m. Additional loads such as equipment on the floors too need to be obtained in terms of pressure (load per unit area). Once you have the various pressure values, you can apply them on the plate elements of the model as a uniform pressure on those elements. Hydrostatic pressure can be applied using STAAD's trapezoidal load facility for elements.
If your building structure is in the USA, refer to the document named ASCE 7 - Minimum Design Loads for Buildings and Other Structures. Similar documents are available for the Eurozone and for various countries.
I had the same question. Thank you very much for clearing that to me. I have another question. If I want to design only the beams and columns then will adding the slab weight as dead load suffice?
Sir, I am doing the pile and pile cap design. Could you please check how I apply the loading, plate meshing and analysis results. It will be the true pleasure for me if you can check my model. Thanks in anticipation.